1321424131 has 2 divisors, whose sum is σ = 1321424132. Its totient is φ = 1321424130.

The previous prime is 1321424123. The next prime is 1321424149. The reversal of 1321424131 is 1314241231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321424131 - 2³ = 1321424123 is a prime.

It is a super-2 number, since 2×1321424131² = 3492323467978210322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1321424171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660712065 + 660712066.

It is an arithmetic number, because the mean of its divisors is an integer number (660712066).

Almost surely, 2^1321424131 is an apocalyptic number.

1321424131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321424131 is an equidigital number, since it uses as much as digits as its factorization.

1321424131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 1321424131 is about 36351.3979236012. The cubic root of 1321424131 is about 1097.3556678416.

Adding to 1321424131 its reverse (1314241231), we get a palindrome (2635665362).

The spelling of 1321424131 in words is "one billion, three hundred twenty-one million, four hundred twenty-four thousand, one hundred thirty-one".